Electric switch.



E. B. WEDMORE.

ELECTRIC SWITCH. APPLICATION FILED NOV. 20, 1905.

Paltented Jan. 19, 1909.

Edmund edmor'a UNITED STATES PATENTOFFIOE;

EDMUND B lVEDMQRE, OF RUGBY, ENGLAND, ASSIGNOB TO GENERAL ELECTRICCOMPANY,

A OORPORATION OF NEW YORK.

ELE CTRIC SWITCH.

N0. erases.

Specification oi Letters Patent. I

Patentedd'an. 19, 1909.

Application filed November 20, 1905'.- Serial No. 288,213.

To all whom it may concern:

Be it known that I, EDMUND B. WEDMQRE, a'subject of the King of GreatBritain, residing at Rugby, England, have invented cer-,

tacts extend downwardly from a horizontal support, to the underside ofwhich the'oil vessel is secured when the switch is in condition foroperation. the contacts are usually some distance from the floor and itis necessary to raise and lower the oil can some distance in attachingit to and removing it from its support. p

In carrying out my invention I preferably employ a lifting lever framewhich is provided with a swinging fulcrum at oneend and at anintermediate point with suitable project-ions which engage socketslocated on op osite sides of the oil vessel.

which may be drawn upward to lift the oil can into its position aboutthe switch contacts or may be lowered to lower the oil can to thefloor.

The character of the invention will be more fully understood uponreference to the following description taken in connection with theaccompanying drawing in which the preferred form of the invention isillustrated.-

In said drawing, Figure 1 is a side elevation of a switch of well-knownconstruction to which the lifting device of the present invention isshown applied; Fig. 2 is a view illustrating the stirrups which providethe In such a construction The outer en of the frame is orovlded with ahandle mechanism 14 by. which the movable contacts are recipro-cated inresponse to the movements of the operating lever 15.

The frame 10 is preferably a casting secured to the rear of the panel 16or other like insulating support. The lever mechanism by which the yoke13, and consequently the contacts 12 are reciprocated, comprisesabelh,

crank lever 17 pivoted at 18 to the rear end of the frame 10, and'at thepoint 19 to'the yoke 13. Another bell-crank lever 20 is pivotedat theforward end of the frame 10 at the point 21, and the rear cnd'of thislever and the point 22 of the lever 17 are connected l,

by a link 23. A suitable link 24 extending through an aperture 25 in thepanel 16 connects the bell-crank lever with the operating lever 15. Anescutcheon plate 26 provided with a stop 27 for the operating lever issecured to the face of the panel 16 by bolts 28. The fixed contacts 11,as well as the movable contacts 12, are adaptedto be surrounded by theoil can 29 which is provided with an interior lining 30 and partitions31 of wood or other suitable insulating material, as is well thedifferent phases of the circuit, a threephase switch being shown in'thepresent instance. The oil can 29 is normally held up against the underside of the frame 10 by latches 32 of any preferrcd'forni. The aboveswitch construction, as previously stated, is

known in the art, the partitions 31 separating of standard constructionand constitutes no part of the present invention.

In carrying out thepresent invention the opposite sides of the oil can29 are provided with plates or projections, 33 formed so as to providean inverted V-shaped socket. These sockets are located, as clearlyillustrated, near the upper part of the oil, above the center of gravityof the filled can, so that when the can is supported by them it will.always remain in vertical position. 'The lifting frai-ne 34 comprisessubstantially parallel latches 32.

the drawing, when it is desired to remove the oil can 29, the liftingframe 34 may be put in place about the oil can with its levers 35extending on opposite sides. bf the can and its ends hooked into thestirrup 37; It may then be lifted to the position illustrated full linesin Fig. 1, thus seating the pins or projections 40 in the sockets formedby the lates 33. Whileheld in' this position the atches 32 may bemanipulated to free the can which'may then be readily lowered bygradually lowering the outer end of the frame 34.- In replacing the oilcan, this operation is reversed. However, in the latter case it. will benoted that by reason, of the swinging fulcrum'formed by the stirrup 3;the can may be readily adjusted laterally into the right position-to been aged by the In addition to t e accuracy thus obtained in setting theoil can, the frame 34 is light and may be readily carried about fromswitch to switch, so that a single frame is sufficient for a largenumber of switches. The construction of the frame is also such that itoccupies little space at the sides of the oil can and therefore can'beused where a number'of oil switches are located side by side in closeproximity on a common switchboard.

What I claim as new and desire to secure by Letters Patent of the UnitedStates, is:-

1. The combination of an electric switch, a detachable .oil canfor'inclosing the switch contacts, and lever mechanism for shifting said'oil can into'and out of its inclosing po- 'into and out ofsaid'inclosing position said mechanism being detachably connected tofulcrum.

3. :The cpmbinaticn withan electric switch v comprising a support forthe switch con- 'tactsand a detachable oil can for inclosing saidcontacts, of means'connected to. said support for shifting the oil canvertically and ering the oil can, andia fulcrum for said lever movablymounted onsaid support to permit lateralmovement of said lever and oilcan.

5. The combination of am ort, switch contacts mounted beneath salsupport, a

detachable oil vcan for inclosing the switch -contacts, means forsecuring said oil can to said support in its inclosing position, andindependent means connected to said support for shifting said oil canvertically and laterally into and out of its inclosing position.

6. The combination with an electric switch comprising a support carryingdownwardly projecting contacts, and an oil can adapted to be movedupward into position to inclose said contacts, of a lifting framepivot/ally secured to said support and pivotally connectedto, said oilcan at a pointabove its center of gravity.

7. The combination with an electric switch comprising a support fordownwardly projecting switch contacts, and a detachable oil can'movable'upward into position to inclose said contacts, of lifting meansfor raising and lowering said oil can detachably pivoted to said su portand connected to said can at a point a ove its center of gravity.

8. The combination with an electric switch comprising a supportfor theswitch contacts and a detachable oil can for inclosing said contacts, ofa lever for raising and low ering said can, and a swinging stirrupmounted on said support to constitute a movable fulcrum for said leverand permit lateral movement of said oil can.

9. The combination of an electric. switch having downwardly-projectingcontacts, an oil can adapted to be moved upward so as to inclose saidcontacts, a support, a lifting frame for. raising and lowering said oilcan pivotally'secured to said support and pivotally supporting said oilcan, and a swing ing stirrup constituting a movable fulcrum for saidframe whereby said oil can may be laterally shifted into its properposition,-

10. The combination of an electric switch having downwardly-projectingcontacts, an oil can adapted to be moved into position to inclose saidcontacts, asu port to which said can ma be secured when in saidinclosing position, a swinging stirrup depending from saidsupport,sockets on opposite sidesof said oil can, a lifting frame comprisingvsubstantially parallel members carried at one end by said stirrup,stiffening members extending between said parallel mem-r bers at theopposite end, and projections for engaging. said sockets extending fromintermediate points on said arallel members In witness whereof havehereunto set my'hand this sixth day of November, 1905.

E. B. WEDMORE.

Witnesses:

WALTER W. BALL, F. Hoon

